build(deps): bump taskcluster from 68.0.3 to 68.0.4 in /tools (#2344)

Bumps [taskcluster](https://github.com/taskcluster/taskcluster) from 68.0.3 to 68.0.4.
- [Release notes](https://github.com/taskcluster/taskcluster/releases)
- [Changelog](https://github.com/taskcluster/taskcluster/blob/main/CHANGELOG.md)
- [Commits](https://github.com/taskcluster/taskcluster/compare/v68.0.3...v68.0.4)

---
updated-dependencies:
- dependency-name: taskcluster
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

Signed-off-by: dependabot[bot] <support@github.com>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

tools/requirements.txt

@@ -7,6 +7,6 @@ multidict==6.1.0
 rs_parsepatch==0.4.0
 sentry-sdk==2.13.0
 structlog==24.4.0
-taskcluster==68.0.3
+taskcluster==68.0.4
 treeherder-client==5.0.0
 yarl==1.11.1